摘要
通过对半干法脱硫产生的亚硫酸钙型脱硫石膏的材性研究表明,其主要矿物成份是亚硫酸钙,另有少量的硫酸钙。亚硫酸钙在氧化气氛条件下经焙烧处理可氧化成为硫酸钙,即Ⅱ型无水石膏。Ⅱ型无水石膏经强度激发,凝结时间和保水性能改性处理之后,可以配置强度高、凝结时间任意可调、且初终凝时差长的高性能粉刷石膏。
Based on the research of the performance of calcium sulfite flue-gas gypsum which produced by semi-dry flue gas desulphurization, it is shown that the main mineral composition is calcium sulfite, as well as a small amount of calcium sulfate. After roasting, the calcium sulfite can become calcium sulfate in oxidizing atmosphere condition, namely Ⅱ type anhydrite. Through the treatment of strength excitation and modification of setting time and water retention, Ⅱ type anhydrite can be configured to high performance painted gypsum with high strength, adjustable setting time and long initial and final setting time.
出处
《混凝土与水泥制品》
北大核心
2013年第2期57-59,共3页
China Concrete and Cement Products
基金
甘肃省科技支撑计划项目(090GKCA023)
甘肃省住房和城乡建设厅建设科技计划项目(JK2011-8)
关键词
半干法脱硫工艺
亚硫酸钙型脱硫石膏
焙烧氧化
强度激发
粉刷石膏
Semi-dry flue-gas desulphurization
Calcium sulfite flue-gas gypsum
Roasting and oxidation
Strengthexcitation
Painted gypsum
